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CVS commit: src/sys/dev/usb

Module Name:    src
Committed By:   jakllsch
Date:           Wed Jun  2 18:53:40 UTC 2010

Modified Files:
        src/sys/dev/usb: ehci.c ehcireg.h

Log Message:
Improve EHCI isochronous code, fix scheduling.

 - Create and use symbolic constants.

 - Convert some switch statements to functionally-similar caculations.

 - Correct scheduling interval of high-speed isochronous transactions.
   Previous calculation produced half the intended rate.

To generate a diff of this commit:
cvs rdiff -u -r1.167 -r1.168 src/sys/dev/usb/ehci.c
cvs rdiff -u -r1.30 -r1.31 src/sys/dev/usb/ehcireg.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

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